(((OverHat[x]),(OverHat[y]))=(Underscript[arg max, (x,y)])P(x,y)Eq.  5where P(x,y)=\[LeftBracketingBar](∑_(l=1)^K) (Subscript[h, l]^′)(e^(j 2π (f/c)2(Sqrt[(((x-(Subscript[x, l])))^2)+(((y-(Subscript[y, l])))^2)])))\[RightBracketingBar]Eq.  6)